The First Due Structural Contemporary Helmets are built to deliver outstanding head protection while maintaining the comfort and easy wearability that the First Due line is known for. Lightweight and evenly balanced, these helmets form a protective system designed for demanding environments. Their aerodynamic profile helps prevent lift, even when moving at speeds up to 70 mph. Specifications Durable, high-temperature thermoplastic outer shell Closed-cell impact cap for enhanced energy absorption Exclusive Phenix suspension system (nape strap or ratchet), adjustable from 6 ½" to 7 ¾"; optional XS and XL liners available 8" detachable Nomex/fire-retardant cotton earlaps for neck and ear coverage Quick-release Nomex web chinstrap with Postman’s slide NFPA-compliant goggles (ESS FirePro or ATAC with long strap or retainers) Goggle retainer attachment kit (standard screw knob or ESS Snap-On/Off style) Four 1" x 4" 3M lime-yellow reflective strips Meets OSHA, NFPA 1971, and NFPA 1951 requirements Weight: 36.5 oz Shield style fit: 4" For more than 44 years, fire departments across the country have relied on the Phenix First Due for durable, dependable structural protection. It offers the performance firefighters expect while also supporting long-term health and comfort. As the lightest NFPA 1971-compliant structural helmet available—with a low center of gravity and excellent balance—it reduces strain on the neck and upper back during extended operations. Standards Compliance NFPA 1971-2015 NFPCA (77) ANSI Z89, Class D CAL-OSHA T8-3403 (88) US OSHA 29 CFR 1910.156 (87)